An educational tool for designing and simulating digital logic circuits, featuring a simple-to-learn interface, hierarchical circuits, wire bundles, and a large component library. As a Java application, it can run on many platforms.

OpenJUMP is a community driven fork of JUMP the "Java Unified Mapping Platform" GIS software. The original JUMP was developed by Vivid Solutions, released under GPL2 in 2003 and discontinued in 2006.
During 2004 already some enthusiastic developers joined together to enhance further the features of JUMP. They launched an independent development branch called OpenJUMP. The name gives credit to the original JUMP development, and at the same time describes the objectives of this project to be fully open to anyone wanting to contribute.
These days OpenJUMP is developed and maintained by (some few) volunteers around the globe. If you need functionality or even better want to contribute you are very welcome to contact us at our mailing list.

POSper is a Point Of Sale (POS) System designed for small businesses. We support a wide variety of hardware and databases. We stand committed to the principals of community, collaboration, and communication and welcome everyone who comes by.

BoardCAD is an easy to use CAD/CAM-program that allows you to quickly design your own surfboards. It is written in Java and can export STEP-files for compatibility with other CAD-systems, and g-code for CNC machines.

jose is a graphical Chess tool.
You can store chess games in a database.
You can view and edit games (including variations and comments).
You can play against a plugged-in chess engine and use it for analysis.
Features 3D board view.

Phex is a P2P filesharing client which connects to the Gnutella network. It is multi-plattform and malware-free. It offers advanced functionalities and integrates all common Gnutella extensions like multi-source downloads and advanced search features

JHylaFAX is a platform independent client for HylaFAX that runs on any Java 6.0 enabled platform. It is capable of sending faxes, displaying server status and received faxes. It has a small footprint, starts up fast and features a sleek user interface.

Magic:The Gathering over LAN or Internet, alone or against another player (need IP of your opponent). The program is the judge : you play with the true rules. Firemox can also emulate another TBS. Written in Java, works on Mac, Windows and Linux.